Author Topic: Controline Curare 60 maiden flight (Read 37273 times)

Sport Pilot · « **on:** August 05, 2015, 06:23:08 PM »

Hi gents

Just to share this video from a very unusual plane design and different from the traditional types used in controline
A video from Ricardo Dalpozo´s Curare 60 controline maiden flight in Brazil
The plane is a beauty and all the finishing and building are first class rated

The engine used in the plane is a piped Enya 50 SS
The plane was built using Prettner´s Curare 60 plan with mods
My best compliments to Ricardo by his outstanding building an great finishing
Have fun with the Curare Ricardo !
Carlo

Video link below:

Carl Cisneros · « **Reply #1 on:** August 05, 2015, 07:20:47 PM »

very very nice Carlo

just need a bit more speed and you can do what ever you want with the plane.

Juan Carlos Pesce · « **Reply #2 on:** August 05, 2015, 09:06:07 PM »

Hi Carlo
How heavy is the model? span?
Thanks for the info.
regards

Juan Carlos Pesce
Buenos Aires
Argentina

wwwarbird · « **Reply #3 on:** August 05, 2015, 10:00:00 PM »

Nice looking plane. The Curare is originally an R/C design isn't it?

Curare · « **Reply #4 on:** August 06, 2015, 12:11:58 AM »

Having a special affinity for Curares that just made my head explode. Nice build but what a thing to do to Curare!

Avaiojet · « **Reply #5 on:** August 06, 2015, 02:18:44 AM »

Told "them" years ago R/C pattern designs could work with CL stunt. Yes, I took heat as usual.

I have a thing for Curares also, having flown a few.

Well, R/C so does that count?

My interest would be the cleaver design changes. PM me with them if it's a secrete.

Outstanding and excellent job!!

Sport Pilot · « **Reply #6 on:** August 06, 2015, 10:41:23 AM »

Hi mates
very nice to know that the group liked the CL Curare video
I'm a Curare fan too. The Curare was a F3A pattern rc ship from circa 1976/77
It was designed by Hans & Hanno Prettner, a father and son team
I dint met Ricardo Delposo personally yet
The video link was sent to me by a friend, and as far as I know Ricardo fly in Sorocaba, city in the state of São Paulo
I could try to obtain some more more data about this plane in particular if necessary
All the best

Carlo

john e. holliday · « **Reply #7 on:** August 06, 2015, 11:31:54 AM »

Nothing like first flight jitters. The plane has the potential and with more time he will be a factor in the stunt circles. In the 70's we used to have a guy that put several RC designs on control line and fly the heck out of them. Thanks for the video.

Randy Ryan · « **Reply #8 on:** August 06, 2015, 11:37:15 AM »

WOW! watching the time on the video he flying a 6-6.5 second lap time!! I'm impressed. while it definitely needs to be faster, he's doing things I wouldn't attempt at that low a speed.

Sport Pilot · « **Reply #9 on:** August 06, 2015, 04:06:23 PM »

Hi, I also noted that the plane is flying in a slow pace
Maybe the engine is still new and the initial setting is rich to help it break in
I will try to obtain more info's about the plane

FLOYD CARTER · « **Reply #10 on:** August 06, 2015, 05:03:54 PM »

Slow is actually good! As long as lines stay tight on overheads, no need to speed it up.

Randy Cuberly · « **Reply #11 on:** August 06, 2015, 05:20:54 PM »

I had and flew 3 different Curare's in R/C pattern in the late 70's early 80s With Rossi 60's. Will always have a soft spot for the design!

Great Effort in making it a CL Stunter!

Randy Cuberly

Jim Kraft · « **Reply #12 on:** August 06, 2015, 06:27:09 PM »

Most of the R/C pattern planes of that era had much longer fuselages than most control line stunters. Also much heavier. Here is a picture of my Joker powered with a YS 60 with a Hatori pipe. It has a 68" span and weighs right at 9# with retracts. It could be built much lighter. The other thing is the thin wings on most of them. I think my Joker has a 12% airfoil.

Not a very good picture but you get the idea. It would be interesting to see how they would do in control line. Back in the late 60's I flew a Top Flite version, which was much modified, of the Nobler in R/C pattern. The coupled flaps and elevator shure made it turn well.

Curare · « **Reply #13 on:** August 06, 2015, 06:37:42 PM »

Jim, don't forget that the joker is mid 80's and a lot of development occurred in pattern between 76 and 86 (turnaround patterns changed them markedly)

When pattern first started, everyone use the knowledge they'd gained from stunt, so the planes looked a lot like stunters, take a look at a contender and you'll see what I mean.
http://flying-models.com/barnstormers/fm_barnstormers_apr2011/april2011-Contender.jpg

Avaiojet · « **Reply #14 on:** August 06, 2015, 06:44:24 PM »

I couldn't resist.

Jim Kraft · « **Reply #15 on:** August 06, 2015, 06:53:26 PM »

I remeber well Curare. I started flying R/C pattern in the late 60's with the R/C Nobler. Next was my own design, and then I flew a Ted White El-Gringo for several years. After that was another of my own designs flollowed by a Dirty Birdy that I flew for 15 years. My dads cousin Phil had one of the shortest planes in the Kwik Fli. But he could fly a stick with a prop on it and make it look good. LOL.

Avaiojet · « **Reply #16 on:** August 06, 2015, 07:15:19 PM »

Jim,

I started with a Kaos, or two. Graduated into a couple of Rossi powered Skynights. Remember them?

Eventually, I scratch built my own.

This scratch built award winning model, which I Posted many years ago at Stupid Stunt, is what started it all.

Some of us just have a great modeling past, right Jim.

And we still have the future!

Dan McEntee · « **Reply #17 on:** August 06, 2015, 08:18:46 PM »

Well it may share the name but it's not a R/C pattern ship. Doesn't look anything like the one in Jim Kraft's picture. Tail and nose moments are different as is the wing outline. Looks like Lincoln Log or some other type of light wing construction. You can see a rib or two through the out board wing covering. Nice looking model with the influence of the Curare.
Type at you later,
Dan McEntee

Brett Buck · « **Reply #18 on:** August 06, 2015, 08:32:33 PM »

Quote from: Avaiojet on August 06, 2015, 07:15:19 PM

This scratch built award winning model, which I Posted many years ago at Stupid Stunt, is what started it all.

If by "started it all" you mean started you on the path to getting banned from SSW, then yes.

Note that the people in Brazil addressed the issues you declared didn't matter when we explained it to you before, and therefore wound up with a viable CL plane. And they aren't claiming they invented the "stunt plane of the future". Other than that, spot on as usual.

Brett

wwwarbird · « **Reply #19 on:** August 06, 2015, 09:58:31 PM »

Quote from: Brett Buck on August 06, 2015, 08:32:33 PM

If by "started it all" you mean started you on the path to getting banned from SSW, then yes.

Just the 'jet doing his best to hijack another thread.

Avaiojet · « **Reply #20 on:** August 07, 2015, 09:00:51 AM »

Here ya go guys, this is all about you.

http://stunthanger.com/smf/index.php/topic,40282.0.html

SteveMoon · « **Reply #21 on:** August 07, 2015, 09:16:58 AM »

Holy s**t, why so much arguing?!?!

Actually, the plane in Jim's post is a Joker, which would totally
explain why it doesn't look like a Curare.

Later, Steve

Randy Ryan · « **Reply #22 on:** August 07, 2015, 10:43:35 AM »

Quote from: FLOYD CARTER on August 06, 2015, 05:03:54 PM

Slow is actually good! As long as lines stay tight on overheads, no need to speed it up.

Yes it is Floyd, I wish I could make something fly 6.5 second laps and stay put where I point it!!!

Martin Quartim · « **Reply #23 on:** August 07, 2015, 02:07:30 PM »

Quote from: Randy Ryan on August 07, 2015, 10:43:35 AM

Yes it is Floyd, I wish I could make something fly 6.5 second laps and stay put where I point it!!!

My good friend Ricardo´s Curare is 71oz and is powered by a Stock Enya SS50 with Aero Quiet Pipe 65-75 turning a 12.5x3.75 3 Blade prop. He was so excited to start flying and mounted the pipe without cutting anything, so I guess it is set very long. Also he used a B.Eather carbon prop without checking the pitch, he just balanced and went flying :-) I am far from him but have been helping him getting the most out of his Enya Engine. This is a ring engine and it will get better and better.

The Enya engines with my setup has been proven to run mighty well with massive torque allowing the guys to fly slow with superb speed control and tight lines.

I guess 6.5s laps is possible with a light model and good wing. I can fly my 72oz Thundergazer at 6.2s laps when winds are light and D.A. is not too bad.

Martin

Randy Cuberly · « **Reply #24 on:** August 07, 2015, 02:51:56 PM »

Quote from: SteveMoon on August 07, 2015, 09:16:58 AM

Holy s**t, why so much arguing?!?!

Actually, the plane in Jim's post is a Joker, which would totally
explain why it doesn't look like a Curare.

Later, Steve

Steve,
If you're referring to Brett's post, I think He's talking about the airplane in the original video that started this thread. Not the Joker. If you look closely at it you will see the C-Tube type construction on the wing (lighter than the original "Curare's" sheeted foam wing that isn't cored). Also it's obvious that the Stab and elevator area have been increased as well as the fuselage shortened.

As to the slow speed the airplane appears somewhat sluggish in my opinion which can probably be attributed to the very slow lap times. I seriously doubt you could snap corners at that speed without if falling out of the sky. Obviously this is just my impression from watching the video but I would bet I'm right. More speed will probably liven things up!

No one could ever convince me that you could fly a 72 oz airplane at 6.2 second laps on reasonable length lines and fly the pattern respectably. I had a 74 oz Trivial Pursuit with a PA61 on a pipe and it flew at 5 second laps on 67 ft lines to maintain any respectable corners ...It also pulled like a freight train in the wind, but would stall in high corners at slower speed.

Also the original post mentions that there are "Mods" in the Curare!

Randy Cuberly

Sport Pilot · « **Reply #25 on:** August 07, 2015, 04:33:36 PM »

Hi mates

I had trying to make contact with Ricardo Dal Pozo, and for my good surprise he contacted me through a local CL forum
So below are the info's obtained with the author:
The Controline CURARE 60 was made using the Curare 60 Mk kit plan, the wing was kept the same from rc version, only increased a little bit on the flap area. The fuselage length and width decreased, and the elevator also increased, lowering the stabilizer. The plane is powered by a piped ENYA SS50 with a 3 bladed carbon prop, the engine is still new and softening. The painting scheme is similar to the one used in the original Curares, and is a personal tribute from Ricardo to Mr. Hanno Pretnner, a great champion
The landing gear isn't tricycle, but a conventional F3A Hobby King conventional landing gear set
The wheels covers and the carbon fiber 3 bladed prop were obtained through Stunt Hobbies from Campinas in Sao Paulo
The support from his friends was of great help and strong motivation to on go with the entire project
He also sent me some nice pics, and below I will try to post in the next reply

Sport Pilot · « **Reply #26 on:** August 07, 2015, 04:43:07 PM »

The pics
Ricardo sent me more pics from the CL Curare but some of them are in higher definition, so I guess that these ones will not be accepted by the forum (2,2/2,5 MB)
These two are the ones with a lower definition

Sport Pilot · « **Reply #27 on:** August 07, 2015, 05:13:44 PM »

Quote from: Martin Quartim on August 07, 2015, 02:07:30 PM

My good friend Ricardo´s Curare is 71oz and is powered by a Stock Enya SS50 with Aero Quite Pipe 65-75 turning a 12.5x3.75 3 Blade prop. He was so excited to start flying and mounted the pipe without cutting anything, so I guess it is set very long. Also he used a B.Eather carbon prop without checking the pitch, he just balanced and went flying :-) I am far from him but have been helping him getting the most out of his Enya Engine. This is a ring engine and it will get better and better.

The Enya engines with my setup has been proven to run mighty well with massive torque allowing the guys to fly slow with superb speed control and tight lines.

I guess 6.5s laps is possible with a light model and good wing. I can fly my 72oz Thundergazer at 6.2s laps when winds are light and D.A. is not too bad.

Martin

Very nice to meet you here Martin
Thank you by completing the info´s about Ricardo´s Curare
Just a note about Martin, he is our official Enya dealer here in Brazil, and give us a very good support on all things related to engine and specially with Enya engines
He is also the owner of Stunt Hobby store in campinas /são Paulo that is mainly focused in controline and controline aerobatics, but gives a good support on all other model categories
All the best
Carlo

Martin Quartim · « **Reply #28 on:** August 07, 2015, 08:32:55 PM »

Quote from: Sport Pilot on August 07, 2015, 05:13:44 PM

Quote from: Martin Quartim on August 07, 2015, 02:07:30 PM

My good friend Ricardo´s Curare is 71oz and is powered by a Stock Enya SS50 with Aero Quite Pipe 65-75 turning a 12.5x3.75 3 Blade prop. He was so excited to start flying and mounted the pipe without cutting anything, so I guess it is set very long. Also he used a B.Eather carbon prop without checking the pitch, he just balanced and went flying :-) I am far from him but have been helping him getting the most out of his Enya Engine. This is a ring engine and it will get better and better.

The Enya engines with my setup has been proven to run mighty well with massive torque allowing the guys to fly slow with superb speed control and tight lines.

I guess 6.5s laps is possible with a light model and good wing. I can fly my 72oz Thundergazer at 6.2s laps when winds are light and D.A. is not too bad.

Martin

Very nice to meet you here Martin
Thank you by completing the info´s about Ricardo´s Curare
Just a note about Martin, he is our official Enya dealer here in Brazil, and give us a very good support on all things related to engine and specially with Enya engines
He is also the owner of Stunt Hobby store in campinas /são Paulo that is mainly focused in controline and controline aerobatics, but gives a good support on all other model categories
All the best
Carlo

Thanks Carlo! hopefully we will meet in person one of these days.

Martin

Brett Buck · « **Reply #29 on:** August 07, 2015, 09:46:03 PM »

Quote from: Sport Pilot on August 07, 2015, 04:43:07 PM

The pics
Ricardo sent me more pics from the CL Curare but some of them are in higher definition, so I guess that these ones will not be accepted by the forum (2,2/2,5 MB)
These two are the ones with a lower definition

Looks really good and it's a neat idea!

Brett

Avaiojet · « **Reply #30 on:** August 08, 2015, 05:36:21 AM »

Nice looking model.

I still don't see the wingspan or the squares? Did I miss it?

Just the weight.

Sport Pilot · « **Reply #31 on:** August 08, 2015, 08:30:55 AM »

Hi mates

Since the spec's are the same as the MK´s 60 Curare, I could extract some data from the plan
The weight of Ricardo´s model as informed by our friend Martin is 71 ounces
The fuse length is 144 cm or 56 3/4 inches
The wingspan is 163 cm or 64 inches
The Wing area is 697 square inches
The target weight as listed (for rc) on plan is 7 to 8 Lbs (3.3 to 3.6 KG)
Reccomended engine for RC - 10 CC or .60/.61
Designed by Hans and Hanno Prettner
The plan used on the model was the OEM one from Mk´s Curare 60 kit from Kato Model Airplane co, Ltd from Osaka - Japan

Perry Rose · « **Reply #32 on:** August 09, 2015, 11:39:33 AM »

Most of the designs from that era had 1/4" wood in the fuselages. MK kits had tons of wood in their kits. Joe Bridi designs had pretty good airfoils for c/l conversion. Built from plans with good wood they could be in the 50 to 60 ounce range.

Gene Martine · « **Reply #33 on:** August 09, 2015, 11:59:30 AM »

All the planes shown looked good to me. I feel building what you like is the best way to go.
Gene

Avaiojet · « **Reply #34 on:** August 09, 2015, 01:57:56 PM »

Quote from: Gene Martine on August 09, 2015, 11:59:30 AM

All the planes shown looked good to me. I feel building what you like is the best way to go.
Gene

Gene,

You really have to give Ricardo Dalpozo credit, and plenty of it. Instead of complaining about some R/C pattern ship design, that can't cut the mustard as a CL model, he went out and just did it!

And what an outstanding job he did. Really a nice looking model.

I'd like to know more about his "see through" techniques. That's a killer.

I have some plans to a few of Hanno Prettner's designs, but not sure what I have? If I wasn't so busy doing this stunt Warbird stuff I'd dig up what I have. The Magic comes to mind unless I'm thinking of someone else.

That was years ago.

The Jet!

Sport Pilot · « **Reply #35 on:** August 09, 2015, 05:39:02 PM »

Hello mates !

Today, Ricardo sent the video link from the second flight from the Curare made today in Sorocaba´s controline track
He also commented in our local forum that the CG was right on the spot, and he is working in a couple of things in order to improve the flight and gain a little more speed
Below the video
Thanks Ricardo, all the best luck

Carlo

Sport Pilot · « **Reply #36 on:** August 09, 2015, 07:52:46 PM »

The author just published a short video showing the model on wood prior to painting and finishing
Really a great and neat work

Perry Rose · « **Reply #37 on:** August 10, 2015, 04:50:15 AM »

The split elevators push rod could be a source of agony later on. Lucky boxes, a regular control horn and a single push rod would be better. Hanno would approve of that.